Ammonia losses from the storage and application of raw and chemo-mechanically separated slurry

Dinuccio, Elio; Gioelli, F.; Balsari, P.; Dorno, N.

doi:10.1016/j.agee.2012.02.015

Cited by 32 publications

(26 citation statements)

References 43 publications

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“…In Italy pig farms produce approximately 17 million tons per year of slurry (Dinuccio et al, 2012). At the same time, specialization of livestock production has led to a concentration of animal production on large farms in restricted areas, a pattern found throughout Europe (Møller et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Pressure and specific energy requirements for densification of compost derived from swine solid fraction

Pampuro

Facello

Cavallo

2013

Span. j. agric. res.

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Compost derived from swine solid fraction is a low density material (bulk density less than 500 kg m-3). This makes it costly to transport from production sites to areas where it could be effectively utilized for value-added applications such as in soil fertilization. Densification is one possible way to enhance the storage and transportation of the compost. This study therefore investigates the effect of pressure (20-110 MPa) and pressure application time (5-120 s) on the compaction characteristics of compost derived from swine solid fraction. Two different types of material have been used: composted swine solid fraction derived from mechanical separation and compost obtained by mixing the first material with wood chips. Results obtained showed that both the pressure applied and the pressure application time significantly affect the density of the compacted samples; while the specific compression energy is significantly affected only by the pressure. Best predictor equations were developed to predict compact density and the specific compression energy required by the densification process. The specific compression energy values based on the results from this study (6-32 kJ kg-1) were significantly lower than the specific energy required to manufacture pellets from biomass feedstock (typically 19-90 kJ kg-1).

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Section: Introductionmentioning

confidence: 99%

Pressure and specific energy requirements for densification of compost derived from swine solid fraction

Pampuro

Facello

Cavallo

2013

Span. j. agric. res.

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“…However, Amon et al (2006) demonstrated that, although mechanical separation can result in lower N losses during spreading, this reduction did not compensate the increase in emissions during the storage phase. Dinuccio et al (2012) found that compared to raw pig slurry, storage and broadcast application to land of separated fractions increased NH 3 emissions by up to 17% and the liquid fraction was the main source of NH 3 losses.…”

Section: Considerations Across the Manure Management Continuummentioning

confidence: 98%

Effect of mechanical separation on emissions during storage of two anaerobically codigested animal slurries

Perazzolo

Mattachini

Tambone

et al. 2015

Agriculture, Ecosystems & Environment

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Section: Nutrient Losses During Winter and Summer Storage Of Separatementioning

confidence: 99%

“…Slurry use as fertilizer should be based on its nutrient and C content (considering potential nitrogen [N] and C losses during on-farm storage) to reduce negative environmental impacts . Losses of N and C as ammonia (NH 3 ), nitrous oxide (N 2 O), and methane (CH 4 ) during slurry storage are particularly relevant (Chadwick et al, 2011;Dinuccio et al, 2012) and should be evaluated and minimized via cost-effective mitigation methods.Using the integrated modeling tool MITERRA-EUROPE, Oenema et al (2007) estimated that in the EU almost 30% of the N excreted in dairy barns is lost during storage. Approximately 63% of the loss was via NH 3 emissions; 23% was lost following nitrification or denitrification as nitric oxide (NO), N 2 O, and N 2 ; and 13% was lost due to leaching and run-off.…”

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confidence: 99%

Nutrient Losses during Winter and Summer Storage of Separated and Unseparated Digested Cattle Slurry

et al. 2017

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Management factors affect nutrient loss during animal manure slurry storage in different ways. We conducted a pilot-scale study to evaluate carbon (C) and nitrogen (N) losses from unseparated and digested dairy slurry during winter and summer storage. In addition to season, treatments included mechanical separation of digestate into liquid and solid fractions and bimonthly mixing. Chemical analyses were performed every 2 wk for the mixed materials and at the start and end of storage for unmixed materials. The parameters examined allowed us to estimate C and N losses and examine the factors that determine these losses as well as emission patterns. Gas measurements were done every 2 wk to determine the main forms in which gaseous losses occurred. To evaluate the effect of separation, measured losses and emissions of separated liquid and solid fractions were mathematically combined using the mass separation efficiency of the mechanical separator. Nutrient losses were mainly affected by climatic conditions. Losses of C (up to 23%) from unseparated, unmixed digestate and of N (38% from combined separated fractions and from unseparated digestate) were much greater in summer than in winter, when C and N losses were <7%. Mixing tended to significantly increase N losses (P < 0.1) only in winter. Mechanical separation resulted in lower GHG emissions from combined separated fractions than from unseparated digestate. Results indicate that to maximize the fertilizer value of digested slurry, dairy farmers must carefully choose management practices, especially in summer. For separated digestates, practices should focus on storage of the liquid fraction, the major contributor of C and N losses (up to 64 and 90% of total losses, respectively) in summer. Moreover, management practices should limit NH 3 , the main form of N losses (up to 99.5%). Nutrient Losses during Winter and Summer Storage of Separated and Unseparated Digested Cattle SlurryFrancesca Perazzolo,* Gabriele Mattachini, Elisabetta Riva, and Giorgio Provolo M anure slurries from dairy and other livestock production systems are valuable sources of plant nutrients and carbon (C) and are thus a resource for crop producers. Slurry use as fertilizer should be based on its nutrient and C content (considering potential nitrogen [N] and C losses during on-farm storage) to reduce negative environmental impacts . Losses of N and C as ammonia (NH 3 ), nitrous oxide (N 2 O), and methane (CH 4 ) during slurry storage are particularly relevant (Chadwick et al., 2011;Dinuccio et al., 2012) and should be evaluated and minimized via cost-effective mitigation methods.Using the integrated modeling tool MITERRA-EUROPE, Oenema et al. (2007) estimated that in the EU almost 30% of the N excreted in dairy barns is lost during storage. Approximately 63% of the loss was via NH 3 emissions; 23% was lost following nitrification or denitrification as nitric oxide (NO), N 2 O, and N 2 ; and 13% was lost due to leaching and run-off. However, the differences in mean N losses from manure...

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Ammonia losses from the storage and application of raw and chemo-mechanically separated slurry

Cited by 32 publications

References 43 publications

Pressure and specific energy requirements for densification of compost derived from swine solid fraction

Pressure and specific energy requirements for densification of compost derived from swine solid fraction

Effect of mechanical separation on emissions during storage of two anaerobically codigested animal slurries

Nutrient Losses during Winter and Summer Storage of Separated and Unseparated Digested Cattle Slurry

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